FernTool IP Lookup
REMOTE · WWW.FERNTOOL.COM
IP lookup with VPN/Tor/datacenter flags, batch lookup, WHOIS (RDAP), DNS, reverse DNS, subnet math.
Available components
Last scanned (16 hours ago)
Scores higher than 46% of remote servers
Reachable. Last reached 18 Oct 2026.
Category Security
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security57
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 15 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability69
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 1219 tokens (~81/item across 15 items; 15 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management7
- Stability observed for 2 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage83
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 48% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 15 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 16 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 18 Oct 26 +1
- The server rewrote its instructions, which are the text every model session reads security
- Schema quality: 67 → 81 ▼ functional
- Tool coverage: 33% → 48% ▲ functional
- Server version: 0.4.0 → 0.5.0 functional
- New tool “convert_timestamp” functional
- New tool “date_calc” functional
- New tool “get_current_time” functional
- 17 Oct 26 +1
- The server rewrote its instructions, which are the text every model session reads security
- Tool coverage: 38% → 33% ▼ functional
- Schema quality: 498 → 809 ▼ functional
- Stability: unverified → 0.03 ▲ functional
- Server version: 0.3.0 → 0.4.0 functional
- New tool “ai_service_status” functional
- New tool “count_words” functional
- New tool “estimate_ai_cost” functional
- New tool “make_qr_code” functional
- 16 Oct 26 61
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 18 Oct 2026 · Probed https://www.ferntool.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=www.ferntool.com | CN=WE1,O=Google Trust Services,C=US | 16 Oct 2026 | 14 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | 2fe5f70993e2f38a13b8b232f85523ad |
| SANs: www.ferntool.com | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of www.ferntool.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| ferntool.com. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://www.ferntool.com/mcp | Verified | 200 | |
| http (plaintext) | http://www.ferntool.com/mcp | HTTPS enforced | 301 | https://www.ferntool.com/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
ai_service_status ~66
Live status of AI services (ChatGPT/OpenAI, Claude, Gemini API, GitHub Copilot, Perplexity, Cohere) read from their official status pages, cached ~60s. level is up, degraded, down or unknown.
| Name | Type | Req | Description |
|---|---|---|---|
| service | string | – | – |
No output schema declared.
No examples provided.
batch_lookup_ip ~59
Look up 1-100 IPv4/IPv6 addresses at once. Each result has version, scope, country, timezone, ASN, network owner and flags (is_tor, is_datacenter, provider).
| Name | Type | Req | Description |
|---|---|---|---|
| ips | array | yes | – |
No output schema declared.
No examples provided.
convert_timestamp ~135
Convert a Unix timestamp (seconds, milliseconds, microseconds or nanoseconds, auto-detected) to a readable date, or a date/time string (e.g. 2026-12-25 09:00, read in the given time zone unless it has its own offset) to a Unix timestamp. Also returns weekday, ISO week and how long ago or until.
| Name | Type | Req | Description |
|---|---|---|---|
| timezone | string | – | IANA time zone for display and for dates without an offset (default UTC) |
| value | string | yes | Timestamp like 1760000000 or a date like 2026-12-25T09:00 |
No output schema declared.
No examples provided.
count_words ~53
Exactly count words, characters (with and without spaces), sentences and paragraphs in a text, with reading/speaking time and the most repeated words. Use this instead of estimating counts yourself.
| Name | Type | Req | Description |
|---|---|---|---|
| text | string | yes | – |
No output schema declared.
No examples provided.
date_calc ~183
Exact calendar maths. With end: days between two dates (plus weeks, months+days, weekdays Mon-Fri, weekend days). With add_days/add_weeks/add_months/add_years (negative to subtract): the resulting date and weekday; business_days=true skips weekends. Use this instead of counting days yourself.
| Name | Type | Req | Description |
|---|---|---|---|
| add_days | integer | – | – |
| add_months | integer | – | – |
| add_weeks | integer | – | – |
| add_years | integer | – | – |
| business_days | boolean | – | add_days counts Monday-Friday only |
| end | string | – | YYYY-MM-DD |
| include_end | boolean | – | Count the end date too (default false) |
| start | string | – | YYYY-MM-DD (default: today in timezone) |
| timezone | string | – | IANA zone used for today when start is omitted (default UTC) |
No output schema declared.
No examples provided.
dns_lookup ~67
Resolve DNS records for a domain via Cloudflare 1.1.1.1 DNS-over-HTTPS. Types: A, AAAA, MX, TXT, NS, CNAME, SOA (default: all).
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | yes | – |
| types | array | – | – |
No output schema declared.
No examples provided.
estimate_ai_cost ~88
Estimate token count and USD API cost of a text across major AI models (OpenAI GPT, Anthropic Claude, Google Gemini), and whether it fits each context window. Token counts are approximate. Pass text, or tokens directly.
| Name | Type | Req | Description |
|---|---|---|---|
| output_tokens | integer | – | Expected reply length in tokens (default: same as input) |
| text | string | – | – |
| tokens | integer | – | – |
No output schema declared.
No examples provided.
get_current_time ~81
Get the exact current date and time (you cannot know it otherwise). Returns Unix seconds and milliseconds, ISO 8601 in UTC and in the requested IANA time zone, weekday, ISO week and day of year.
| Name | Type | Req | Description |
|---|---|---|---|
| timezone | string | – | IANA time zone, e.g. Africa/Johannesburg or America/New_York (default UTC) |
No output schema declared.
No examples provided.
get_my_ip ~50
Return the public IP address (and ISP, ASN, location, timezone) of the caller as seen by FernTool. Note: for remote agents this is the IP of the machine calling the MCP server.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
lookup_ip ~59
Validate an IPv4/IPv6 address and return its version, scope (public/private/loopback/...), country, ASN and network owner (DB-IP Lite + IPtoASN data).
| Name | Type | Req | Description |
|---|---|---|---|
| ip | string | yes | IPv4 or IPv6 address |
No output schema declared.
No examples provided.
make_qr_code ~94
Create a static QR code (never expires) for a URL, Wi-Fi string (WIFI:T:WPA;S:name;P:pass;;), mailto:, tel: or any text up to 2000 characters. Returns an SVG string plus a ferntool.com image URL that renders the same code.
| Name | Type | Req | Description |
|---|---|---|---|
| ecc | string | – | Error correction (default M) |
| text | string | yes | – |
No output schema declared.
No examples provided.
reverse_dns ~36
Reverse DNS (PTR) lookup for an IPv4/IPv6 address, with forward-confirmation check.
| Name | Type | Req | Description |
|---|---|---|---|
| ip | string | yes | – |
No output schema declared.
No examples provided.
subnet_calc ~72
IPv4/IPv6 CIDR subnet calculator: network, netmask, wildcard, broadcast, first/last usable host, total and usable addresses, block type.
| Name | Type | Req | Description |
|---|---|---|---|
| cidr | string | yes | e.g. 192.168.1.0/24 or 2001:db8::/48 |
No output schema declared.
No examples provided.
validate_ip ~32
Check whether a string is a valid IPv4 or IPv6 address and classify it.
| Name | Type | Req | Description |
|---|---|---|---|
| ip | string | yes | – |
No output schema declared.
No examples provided.
whois_lookup ~84
WHOIS via RDAP for a domain (registrar, created/expiry dates, status, nameservers, DNSSEC), an IP address (network name, range, owner org, country, abuse contact) or an ASN like AS13335.
| Name | Type | Req | Description |
|---|---|---|---|
| query | string | yes | Domain, IPv4/IPv6 address, or ASN (e.g. AS13335) |
No output schema declared.
No examples provided.
How do I install the FernTool IP Lookup MCP server?
FernTool IP Lookup is a hosted endpoint at https://www.ferntool.com/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · www.ferntool.com
claude mcp add --transport http com-ferntool-ip 'https://www.ferntool.com/mcp'
What is the FernTool IP Lookup MCP server?
FernTool IP Lookup is an MCP server listed in the public MCP registry as com.ferntool/ip. IP lookup with VPN/Tor/datacenter flags, batch lookup, WHOIS (RDAP), DNS, reverse DNS, subnet math. This page covers its hosted endpoint (https://www.ferntool.com/mcp).
Is the FernTool IP Lookup MCP server safe to use?
FernTool IP Lookup scores 63 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the FernTool IP Lookup MCP server expose?
FernTool IP Lookup exposes 15 tools: get_my_ip, lookup_ip, validate_ip, batch_lookup_ip, whois_lookup, and 10 more. Their descriptions and schemas cost roughly 1,159 tokens of context every time the server is loaded.
Does the FernTool IP Lookup MCP server require authentication?
No. We connected to FernTool IP Lookup without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the FernTool IP Lookup MCP server still maintained?
FernTool IP Lookup is still listed as active in the MCP registry. We last reached this channel on 18 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.